February 27, 200719 yr This is a 2.2 motor and 5 speed in a 95 Impreza. The car originally had a 1.8. I put the 2.2 engine in using the 1.8 intake and all 1.8 lines/controls etc. Runs fine otherwise and motor ran great in the car I took it out of (drove it for several years). If you start in first gear and wind it out in all the gears (atleast til you hit 4th) you'd never know anything was wrong. But if you're in 3rd or 4th crusing for example and try to accelerate, it will stumble, not miss from around 2000 to 2500-3000 RPM. Any ideas? TIA. BTW, I did this same conversion (with a 91 Legacy motor) in another 95 but with an automatic and didn't have this issue.
February 28, 200719 yr Author Interesting. Motor has knock sensor, but original 1.8 didn't so the knock sensor is not plugged in!
February 28, 200719 yr hrmmm are the intakes differnt on the two engines? Can the car be starving for air in a specific rpm band? Why did you swap intakes? nipper
February 28, 200719 yr Author Totally different connections for electrical/emissions/etc. Intake manifold is physically no different from 1.8 to 2.2. Can't be starving for air. If it did it would be in the higher RPM range.
February 28, 200719 yr Only a WAG Can you try the MAF from the 2.2? Is it possible the ECU ignores certain parameters when at WOT winding it out ? Like the MAF signal.
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